Backlight assembly and flat panel display apparatus having the same

ABSTRACT

In a backlight assembly and a flat panel display apparatus, the backlight assembly has a diffusing plate, a supporting member and reflecting plate. The supporting member has a base body portion, a supporting portion supporting the diffusing plate and a lamp holder receiving lamps to uniformly maintain spaced intervals between the lamps. The base body portion is disposed under the reflecting plate. The supporting portion and the lamp holder are inserted through engaging openings formed at the reflecting plate such that the supporting portion and the lamp holder are upwardly protruded with respect to the reflecting plate. Accordingly, the backlight assembly may reduce an area of the reflecting plate covered by the supporting member, thereby providing the light having uniform brightness distribution.

CROSS REFERENCE TO RELATED APPLICATIONS

This Application is a Continuation of U.S. application Ser. No.11/855,707 filed Sep. 14, 2007, which is a Continuation of U.S.application Ser. No. 11/023,647, filed Dec. 29, 2004, now U.S. Pat. No.7,270,467, issued Sep. 18, 2007, which application claims priority toand the benefit of Korean Patent Application No. 2003-99854, filed Dec.30, 2003, the contents of which are herein incorporated by reference inits entirety.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a backlight assembly and a flat paneldisplay apparatus having the backlight assembly. More particularly, thepresent invention relates to a backlight assembly capable of providing alight having a uniform brightness distribution and a flat panel displayapparatus having the backlight assembly.

2. Description of the Related Art

In general, in order to visually confirm information processed in aninformation-processing device, a flat panel display apparatus for a roleas an interface displays an image in response to an image signalexternally provided.

A liquid crystal display apparatus, which is one of the flat paneldisplay apparatus, uses optical properties of liquid crystal so as todisplay an image. A liquid crystal display apparatus, generally,includes a liquid crystal display panel that displays an imagecorresponding to an image signal using a light and a backlight assemblythat provides the light to the liquid crystal display apparatus.

The backlight assembly is classified into an edge type backlightassembly and a direct illumination type backlight assembly in accordancewith a position where a light source that is emitting the light ispositioned.

The edge type backlight assembly has at least one light source disposedat a position adjacent to a side face of a light guide plate. The directillumination type backlight assembly has a plurality of light sourcesdisposed under the liquid crystal display panel. The light sources ofthe direct illumination type backlight assembly directly irradiate thelight over the liquid crystal display panel.

The direct illumination type backlight assembly has a diffusing platedisposed between the light sources and the liquid crystal display panel,a supporting member that maintains an interval between the light sourcesand the diffusing plate, a reflecting plate that reflects the light fromthe light sources to the diffusing plate, and a receiving container thatreceives the light sources.

The supporting member disposed between the reflecting plate and thediffusing plate is disposed on the reflecting plate. Thus, thesupporting member partially covers an upper face of the reflectingplate, and the covered area of the upper face of the reflecting platemay not reflect the light from the light sources to the diffusing plate.That is, the covered area of the reflecting plate has reflectance lowerthan reflectance at an area not covered by the supporting member, sothat the reflecting plate may not uniformly provide the light to thediffusing plate. As a result, a display quality of the liquid crystaldisplay apparatus may be deteriorated.

BRIEF SUMMARY OF THE INVENTION

The present invention provides a backlight assembly capable of providinga light having a uniform brightness distribution,

The present invention provides a flat panel display apparatus having theabove backlight assembly.

In one aspect of the present invention, a backlight assembly includes alamp emitting a light, a diffusing member, a reflecting member andsupporting member.

The diffusing member diffuses the light provided from the lamp. Thereflecting member is disposed under the lamp to reflect the lightprovided from the lamp to the diffusing member. The supporting member isdisposed under the reflecting member to support the diffusing member.The supporting member partially passes through the reflecting member andis upwardly protruded with respect to the reflecting member.

In another aspect of the present invention, a fiat panel displayapparatus includes a display panel and a backlight assembly.

The display panel displays an image using a light externally provided.

The backlight assembly has a lamp emitting a light, a diffusing member,a reflecting member and supporting member. The diffusing member diffusesthe light provided from the lamp and provides the diffused light to thedisplay panel. The reflecting member is disposed under the lamp toreflect the light provided from the lamp to the diffusing member. Thesupporting member is disposed under the reflecting member to support thediffusing member. The supporting member partially passes through thereflecting member and is upwardly protruded with respect to thereflecting member.

According to the backlight assembly and the flat panel displayapparatus, since a portion of the supporting member is disposed on thereflecting member, the backlight assembly may provide the light havinguniform brightness distribution to the display panel.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other advantages of the present invention will becomereadily apparent by reference to the following detailed description whenconsidered in conjunction with the accompanying drawings wherein:

FIG. 1 is a cross-sectioned view showing a flat panel display apparatusaccording to an exemplary embodiment of the present invention;

FIG. 2 is a cross-sectional view showing the backlight assembly shown inFIG. 1;

FIG. 3 is an exploded perspective view showing the reflecting plate andthe receiving container shown in FIG. 2;

FIG. 4 is a plane view showing the backlight assembly shown in FIG. 2;

FIG. 5 is a cross-sectional view showing a backlight assembly accordingto another exemplary embodiment of the present invention;

FIG. 6 is a plane view showing the backlight assembly shown in FIG. 5;and

FIG. 7 is a perspective view showing the receiving container shown inFIG. 4,

DESCRIPTION OF THE PREFERRED EMBODIMENT

Hereinafter, the present invention will be explained in detail withreference to the accompanying drawings.

FIG. 1 is a cross-sectional view showing a flat panel display apparatusaccording to an exemplary embodiment of the present invention.

Referring to FIG. 1, a flat panel display apparatus 500 includes aliquid crystal display panel 100 that displays an image using a light, abacklight assembly 200 that provides the light to the liquid crystaldisplay panel 100, a first mold frame 300 that receives the liquidcrystal display panel 100, and a top chassis 400.

The liquid crystal display panel 100 has a thin film transistorsubstrate 110, a color filter substrate 120 coupled to the thin filmtransistor substrate 110, and a liquid crystal layer (not shown)disposed between the thin film transistor substrate 110 and the colorfilter substrate 120.

The thin film transistor substrate 110 is a transparent substrate onwhich thin film transistors are formed in a matrix configuration. Thecolor filter substrate 120 facing the thin film transistor substrate 110is a transparent substrate formed in a thin film process. Red (R), green(G) and blue (B) color pixels are formed on the color filter substrate120.

The backlight assembly 200 disposed under the liquid crystal displaypanel 100 uniformly provides the light to the liquid crystal displaypanel 100.

The backlight assembly 200 includes a plurality of lamp 210 that emitsthe light, a diffusing plate 220 and a diffusing sheet 230 that diffusethe light, a second mold frame 250 that receives the lamps 210, areflecting plate 240 and the lamps 210, and a supporting member 270 thatmaintains an interval between the receiving container 260 and thediffusing plate 220.

Particularly, the lamps 20 emit the light in response to a power voltageexternally provided. The lamps 210 are disposed under an effectivedisplay area of the liquid crystal display panel 100 on which the imageis displayed. The lamps 210 arc arranged in parallel to each other toprovide the light to the liquid crystal display panel 100. In FIG. 1,the lamps 210 have a first lamp 211 and a second lamp 212, but the flatpanel display apparatus 500 may have substantially more than two lamps.

The diffusing plate 220 and the diffusing sheet 230 are sequentiallydisposed between the lamps 210 and the liquid crystal display panel 100.The diffusing plate 220 and the diffusion sheet 230 diffuse the lightemitted from the lamps 210, and provide the diffused light to the liquidcrystal display panel 100.

The reflecting plate 240 is disposed under the lamps 210. The reflectingplate 240 reflects the light emitted from the lamps 210 to the diffusingplate 220 so as to enhance a light efficiency. The reflecting plate 240has a plurality of engaging openings through which a portion of thesupporting member 270 passes.

The second mold frame 250 receives the lamps 210, the diffusing plate220 and the diffusion sheet 230. The second mold frame 250 has a bottomplate partially opened and a sidewall extended from the bottom plate.The lamps 210 are disposed on the bottom plate of the second mold frame250. The second mold frame 250 has a stepped portion 251 protruded fromthe sidewall so as to sequentially receive the diffusing plate 220 andthe diffusing sheet 230.

In this exemplary embodiment, in order to uniformly provide the light tothe liquid crystal display panel 100, the lamps 210 are disposed atpositions spaced apart from the diffusing plate 220 in a predetermineddistance. Also, the lamps 210 are spaced apart from each other in apredetermined distance.

The second mold frame 250 is coupled to the receiving container 260. Thereceiving container 260 receives the reflecting plate 240 and the lamps210. The receiving container 260 has a plurality of openings formedthrough an area corresponding to the engaging openings formed throughthe reflecting plate 240 such that the supporting member 270 isinserted.

A portion of the supporting member 270 is disposed under the receivingcontainer 260. The supporting member 270 supports the diffusing plate220 such that the distance between the lamps 210 and the diffusing plate220, and also supports the lamps 210 to be uniformly spaced apart fromeach other.

The supporting member 270 is coupled to the receiving container 270. Anumber of supporting members may increase or decrease depending upon asize of the flat panel display apparatus 500.

The first mold frame 300 is disposed on the backlight assembly 200. Themold frame 300 has a bottom plate partially opened such that the lightfrom the backlight assembly 200 disposed under the first mold frame 300is provided to the liquid crystal display panel 100. The first moldframe 300 receives the liquid crystal display panel 100. The first moldframe 300 is coupled to the second mold frame 250 so as to fix thediffusing plate 220 and the diffusing sheet 230 to the second mold frame250.

The top chassis 400 is disposed on the liquid crystal display panel 100.The top chassis 400 is coupled to the receiving container 260 to fix theliquid crystal display panel 100 to the first mold frame 300. The topchassis 400 covers edge of the liquid crystal display panel 100 exceptfor the effective display area on which the image is displayed.

FIG. 2 is a cross-sectional view showing the backlight assembly shown inFIG. 1. FIG. 3 is an exploded perspective view showing the reflectingplate and the receiving container shown in FIG. 2. In FIG. 2, in orderto clearly show the receiving container 260 and the supporting member270, the second mold frame 250 and the diffusing sheet 230 are omitted.

Referring to FIGS. 2 and 3, the reflecting plate 240 is disposed on thereceiving container 260, and a portion of the supporting member 270 isdisposed under the receiving container 260.

The supporting member 270 includes a base body portion 271, a pluralityof lamp holder 272 that receives the lamps 210 so as to fix the lamps210 to predetermined positions, and a supporting portion 273 thatsupports the diffusing plate 220.

Particularly, an upper face of the base body portion 271 of thesupporting member 270 makes contact with a rear face of the receivingcontainer 260.

The lamp holders 272 are protruded from the upper face of the base bodyportion 271. The lamp holders 22 have a first lamp holder 272 a and asecond lamp holder 272 b. In this exemplary embodiment, the supportingmember 270 has the first and second lamp holders 272 a and 272 b, butnumber of the lamp holders 272 may be varied in accordance with numberof the lamps 210.

The first lamp holder 272 a receives the first lamp 211 of the lamps 210so as to fix the first lamp 211 to a predetermined position. The firstlamp holder 272 a includes a first wing portion 71 and a second wingportion 72 that is integrally formed with the first wing portion 71 soas to hold a portion of an outer face of the first lamp 211.

In this exemplary embodiment, the second lamp holder 272 b has structuresubstantially identical to the first lamp holder 272 a, and thus adetailed description of the second lamp holder 272 b will be described.

The second lamp holder 272 b receives a second lamp 212 of the lamps 210so as to fix the second lamp 212 to a predetermined position.

The supporting portion 273 is disposed between the first and second lampholders 272 a and 272 b. The supporting portion 273 is protruded fromthe base body portion 271 toward a direction where the first and secondlamp holders 272 a and 272 b are protruded so as to support thediffusing plate 220. The supporting portion 273 has a couplingprotrusion 73 disposed at a position spaced apart from the base bodyportion 271 and protruded toward a longitudinal direction of the basebody portion 271. When the supporting member 270 is inserted into theopening of the receiving container 260, the coupling protrusion 73 iscoupled to the upper face of the receiving container 260, therebypreventing the supporting member 270 from being separating from thereceiving container 260.

Referring to FIG. 3, the reflecting plate 240 has a first engagingopening 241 formed through the bottom thereof and a second engagingopening 242 formed through the bottom thereof. The first and second lampholders 272 a and 272 b are inserted into the second engaging opening242, and the supporting portion 273 is inserted into the first engagingopening 241. The second engaging opening 242 has a first holder engagingopening 242 a through which the first lamp holder 272 a is inserted anda second holder engaging opening 242 b through which the second lampholder 272 b is inserted. The first engaging opening 241 is disposedbetween the first and second holder engaging openings 242 a and 242 b.

The receiving container 260 includes a bottom plate 261 on which thereflecting plate 240 is disposed and a sidewall 262 extended from anedge of the bottom plate 261 to provide a receiving space. The receivingcontainer 260 includes a first opening 263 formed through the bottomplate 261 thereof and a second opening 264 formed through the bottomplate 261 thereof. The first opening 263 is formed at a positioncorresponding to the first engaging opening 241 and the second opening264 is formed at a position corresponding to the second engaging opening242.

The second opening 264 has a first holder opening 264 a and a secondholder opening 264 b corresponding to the first and second holderengaging openings 242 a and 242 b, respectively. Numbers of the openingsformed through the receiving container 260 are identical to numbers ofthe engaging openings formed through the reflecting plate 240.

The supporting portion 273 is inserted inside the receiving container260 after sequentially passing through the first opening 263 and thefirst engaging opening 241. The coupling protrusion 73 of the supportingportion 273 is inserted inside the receiving container 260, and coupledto the bottom plate 261 in a hook-type manner. In this exemplaryembodiment, the first opening 263 has a width D1 that is smaller than awidth D2 at which the coupling protrusion 73 is formed. Thus, thesupporting portion 273 inserted inside the receiving container 260 maybe not separated from the receiving container 260 by the hook-typemanner of the coupling protrusion 73 and the receiving container 260.

Although not shown in FIGS, a width of the first engaging opening 241may be identical to or greater than the width D1 of the first opening263. In case that the width of the first engaging opening 241 is greaterthan the width D1 of the first opening 263, the width of the firstengaging opening 241 is identical to the width D2 at which the couplingprotrusion 73 is formed. Thus, the coupling protrusion 73 may be coupledto the reflecting plate 240 in the hook-type manner.

The first lamp holder 272 a is inserted inside the receiving container260 after sequentially passing through the first holder opening 264 aand the first holder engaging opening 242 a. The second lamp holder 272b is also inserted inside the receiving container 260 after sequentiallypassing through the second holder opening 264 b and the second holderengaging opening 242 b.

FIG. 4 is a plane view showing the backlight assembly shown in FIG. 2.In FIG. 4, in order to clearly show the reflecting plate 240 and thesupporting member 270, the diffusing plate 220 and the receivingcontainer 260 are omitted.

Referring to FIG, 4, when the reflecting plate 240 is combined with thereceiving container 260, the first lamp holder 272 a of the supportingmember 270 is disposed on the reflecting plate 240 after sequentiallypassing though the first holder opening 264 a of the receiving container260 and the first holder engaging opening 242 a of the reflecting plate240. The second lamp holder 272 b of the supporting member 270 is alsodisposed on the reflecting plate 240 after sequentially passing throughthe second holder opening 264 b of the receiving container 260 and thesecond holder engaging opening 242 b of the reflecting plate 240. Thesupporting portion 273 of the supporting member 270 is also disposed onthe reflecting plate 240 after sequentially passing through the firstopening 263 of the receiving container 260 and the first engagingopening 241 of the reflecting plate 240. The base body portion 271 ofthe supporting member 270 is disposed under the receiving container 260and the reflecting plate.

That is, the first lamp holder 272 a, the second lamp holder 272 b andthe supporting portion 273 are disposed on the reflecting plate 240, butthe base body portion 271 is disposed under the reflecting plate 240.

In other words, the first and second lamp holders 272 a and 272 bholding the first and second lamps 211 and 212 and the supportingportion 273 supporting the diffusing plate 220 of the supporting member270 are disposed on the reflecting plate 240, and the base body portion271 is disposed under the reflecting plate 240 of the supporting member270.

The first lamp holder 272 a and the second lamp holder 272 b and thesupporting portion 273 disposed on the reflecting plate 240 are fixed tothe receiving container 260 by the hook-type manner between the couplingprotrusion 73 protruded from the supporting portion 273 and thereceiving container 260. Thus, an area of the reflecting plate 240covered by the supporting member 270 may be reduced.

As a result, an area of the reflecting plate 240 that reflects the lightemitted from the lamps 210 may increase, and the reflecting plate 240may uniformly reflect the light over the whole area thereof. Thus, thebacklight assembly 200 may provide the light having uniform lightdistribution to the liquid crystal display panel 100 so that the flatpanel display apparatus 500 may improve display quality of the imagedisplayed thereon.

FIG. 5 is a cross-sectional view showing a backlight assembly accordingto another exemplary embodiment of the present invention.

Referring to FIG. 5, a backlight assembly 600 according to anotherexemplary embodiment of the present invention has same structure as thebacklight assembly 200 shown in FIG. 2 except for a reflecting plate610, a supporting member 620 and a receiving container 630. Therefore,in FIG. 5, the same reference numerals denote the same elements in FIG.2, and thus the detailed descriptions of the same elements will beomitted.

The backlight assembly 600 includes a plurality of lamps 210, adiffusing plate 220 that diffuses a light emitted from the lamps 210,the reflecting plate 610 that reflects the light from the lamps 210 tothe diffusing plate 220, the supporting member 620 that uniformlymaintains an interval between the lamps 210 and the diffusing plate 220and the receiving container 630.

In FIG. 5, the lamps 210 have a first lamp 211 and a second lamp 212,but the flat panel display apparatus 500 may have substantially morethan two lamps.

The first and second lamps 211 and 212 are arranged in parallel to eachother so as to uniformly provide the light to the liquid crystal displaypanel 100 (not shown, refer to FIG. 1). The first and second lamps 211and 212 are spaced apart from the diffusing plate 220, and each of thefirst and second lamps 211 and 212 is spaced apart from each other in apredetermined interval.

More particularly, the diffusing plate 220 is disposed on the first andsecond lamps 211 and 212, and the reflecting plate 610 is disposed underthe first and second lamps 211 and 212.

The reflecting plate 610 has a plurality of engaging openings into whicha portion of the supporting member 620 is inserted.

A remaining portion of the supporting member 620 is disposed under thereflecting plate 610. The supporting member 620 has a base body portion621, a plurality of lamp holders 622 that fixes the first and secondlamps 211 and 212 to a predetermined position, and supporting portion623 that supports the diffusing plate 220.

Particularly, an upper face of the base body portion 621 disposed underthe reflecting plate 610 makes contact with a lower face of thereflecting plate 610.

The lamp holders 622 are protruded from the upper face of the base bodyportion 621. The lamp holders 622 have a first lamp holder 622 a and asecond lamp holder 622 b. In this exemplary embodiment, the supportingmember 620 has two lamp holders, but numbers of the lamp holders may bevaried in accordance with numbers of the lamps 210.

The first lamp holder 622 a receives the first lamp 211 of the lamps 210so as to fix the first lamp 211 to a predetermined position. The firstlamp holder 622 a includes a first wing portion 61 and a second wingportion 62 that is integrally formed with the first wing portion 61 soas to hold a portion of an outer face of the first lamp 211.

In this exemplary embodiment, the second lamp holder 622 b has structuresubstantially identical to the first lamp holder 622 a. Thus, a detaileddescription of the second lamp holder 622 b will be omitted.

The second lamp holder 622 b receives the second lamp 212 of the lamps210 so as to fix the second lamp 212 to a predetermined position.

The supporting portion 623 is disposed between the first and second lampholders 622 a and 622 b. The supporting portion 623 is protruded fromthe base body portion 621 toward the diffusing plate 220 to support thediffusing plate 220.

The first lamp holder 622 a, the second lamp holder 622 b and thesupporting portion 623 are inserted through a plurality of engagingholes formed through the reflecting plate 610 toward the diffusing plate220.

The reflecting plate 610 has a first engaging hole 611 into which thesupporting portion 623 is inserted and a second engaging hole into whichthe first and second lamp holders 622 a and 622 b is inserted.

The second engaging hole has a first holder engaging hole 612 into whichthe first lamp holder 622 a is inserted and a second holder engaginghole 613 into which the second lamp holder 622 b is inserted. The firstengaging hole 611 is disposed between the first and second holderengaging holes 612 and 613.

The reflecting plate 610 and the supporting member 620 are received intothe receiving container 630. In order to receive the base body portion621 of the supporting member 620, the receiving container 630 has areceiving recess 31 formed at a bottom plate thereof. The receivingcontainer 630 may prevent separation of the reflecting plate 610 fromthe bottom plate of the receiving container 630.

An adhesive member 640 is disposed between the base body portion 621 ofthe supporting member 620 and the receiving container 630. The adhesivemember 640 adheres the base body portion 621 of the supporting member620 to a bottom face of the receiving recess 31 to improve coherencebetween the supporting member 620 and the receiving container 630.

FIG. 6 is a plane view showing the backlight assembly shown in FIG. 5.In FIG. 6, in order to clearly show the reflecting plate 610 and thesupporting member 620, the diffusing plate 220 and the receivingcontainer 630 will be omitted.

Referring to FIG. 6, when the supporting member 620 is coupled to thereflecting plate 610, the first lamp holder 622 a and the second lampholder 622 b of the supporting member 620 are disposed on the reflectingplate 610 after passing through the first holder engaging opening 612and the second holder engaging opening 613 of the reflecting plate 610.The supporting portion 623 of the supporting member 620 is also disposedon the reflecting plate 610 after passing through the first engagingopening 611 disposed between the first and second holder engagingopenings 612 and 613 of the reflecting plate 610. The base body portion621 of the supporting member 610 is disposed under the reflecting plate610.

That is, the first lamp holder 622 a, the second lamp holder 622 b andthe supporting portion 623 are disposed on the reflecting plate 610, butthe base body portion 621 is disposed under the reflecting plate 610.

In other words, since the base body portion 621 of the supporting member610 is disposed under the reflecting plate 610, an area of thereflecting plate 610 covered by the supporting member 620 may bereduced. As a result, an area of the reflecting plate 610 that reflectsthe light emitted from the lamps 210 may increase, and the reflectingplate 610 may uniformly reflect the light over the whole area thereof.Thus, the backlight assembly 600 may provide the light having uniformlight distribution to the liquid crystal display panel (not shown).

FIG. 7 is a perspective view showing the receiving container shown inFIG. 4.

Referring to FIG. 7, the receiving container 630 has a bottom plate 631on which the supporting member 620 and the reflecting plate 610 aresequentially disposed and a sidewall 632 extended from an edge of thebottom late 631 to provide a receiving space.

Particularly, the receiving recess 31 is formed at the bottom plate 631of the receiving container 630 so as to receive the base body portion621 of the supporting member 620. The receiving recess 31 is formed bypartially recessing the bottom plate 631 of the receiving container 610.Thus, the bottom plate 631 of the receiving container 630 correspondingto the receiving recess 31 is outwardly protruded such that a receivingspace of the receiving recess 31 may be sufficiently obtained. As aresult, the receiving container 630 may prevent separation of thereflecting plate 610 from the bottom plate 631 of the receivingcontainer 630. In this exemplary embodiment, a depth of the receivingrecess 31 is substantially equal to a thickness that is a sum ofthicknesses of the base body portion 621 and the adhesive member 640.

According to the present invention, the backlight assembly has thelamps, the reflecting plate disposed under the lamps and the diffusingplate disposed on the lamps. The backlight assembly also further has thelamp holder uniformly maintaining the interval between the lamps and thesupporting member having the supporting portion supporting the diffusingplate. The reflecting plate has the engaging openings, the lamp holderand the supporting portion inserted through the engaging openings, andthe base body portion integrally formed with the lamp holder and thesupporting portion is disposed under the reflecting plate.

Thus, the area of the reflecting plate covered by the supporting membermay be reduced. Therefore, the flat panel display apparatus may enhancean amount of the light reflected from the reflecting plate anduniformity of the light, thereby improving the display quality of theimage.

Although the exemplary embodiments of the present invention have beendescribed, it is understood that the present invention should not belimited to these exemplary embodiments but various changes andmodifications can be made by one ordinary skilled in the art within thespirit and scope of the present invention as hereinafter claimed.

1. A backlight assembly, comprising: a light source that emits light; adiffusing member diffusing the light from the light source; a reflectingplate reflecting the light from the light source toward the diffusingmember and including a first opening; a receiving container receivingthe light source, the diffusing member and the reflecting plate, thereceiving container comprising a bottom plate having a second openingthat corresponds to the first opening of the reflecting plate and aplurality of sidewalls extending from the bottom plate; and a supportingmember disposed under the diffusing member, the supporting membercomprising a supporting portion supporting the diffusing member, a basebody portion connected to the supporting portion and inserted to thesecond opening of the receiving container, and a protrusion protrudedfrom the supporting portion and overlapped an edge of the second openingof the bottom plate.
 2. The backlight assembly of claim 1, wherein thesupporting portion partially inserts to the first opening of thereflecting plate.
 3. The backlight assembly of claim 2, wherein the basebody portion includes a first portion disposed under the bottom plate ofthe receiving container and a second portion protruding from the firstportion to insert to the second opening of the bottom plate of thereceiving container.
 4. The backlight assembly of claim 3, wherein thefirst portion of the base body portion has a cross-sectional areagreater than an area of the second opening.
 5. The backlight assembly ofclaim 1, wherein an area of the first opening is greater than an area ofthe second opening.
 6. The backlight assembly of claim 1, wherein an endportion of the protrusion of the supporting member contacts with thereflecting plate.
 7. A flat panel display apparatus, comprising: adisplay panel that displays an image; and, a backlight assemblycomprising: a light source that emits light; a diffusing memberdiffusing the light from the light source; a reflecting plate reflectingthe light from the light source toward the diffusing member andincluding a first opening; a receiving container receiving the lightsource, the diffusing member and the reflecting plate, the receivingcontainer comprising a bottom plate having a second opening thatcorresponds to the first opening of the reflecting plate and a pluralityof sidewalls extending from the bottom plate; and a supporting memberdisposed under the diffusing member, the supporting member comprising asupporting portion supporting the diffusing member, a base body portionconnected to the supporting portion and inserted to the second openingof the receiving container, and a protrusion protruded from thesupporting portion and overlapped an edge of the second opening of thebottom plate.
 8. The flat panel display apparatus of claim 7, whereinthe supporting portion partially inserts to the first opening of thereflecting plate.
 9. The flat panel display apparatus of claim 8,wherein the base body portion includes a first portion disposed underthe bottom plate of the receiving container and a second portionprotruding from the first portion to insert to the second opening of thebottom plate of the receiving container.
 10. The flat panel displayapparatus of claim 9, wherein the first portion of the base body portionhas a cross-sectional area greater than an area of the second opening.11. The flat panel display apparatus of claim 7, wherein an area of thefirst opening is greater than an area of the second opening.
 12. Theflat panel display apparatus of claim 7, wherein an end portion of theprotrusion of the supporting member contacts with the reflecting plate.